—I wonder＿＿＿ like to be an astronaut(宇航员).
—I don’t know, but I imagine it’s exciting.
| A．what is it | B．what it is |
| C．whether is it | D．whether it is. |
If you want to be healthier, you shouldn't do _____ in the classroom all the time but do more _____ on the playground.
| A．exercise; exercises | B．exercise; exercise |
| C．exercises; exercises | D．exercises; exercise |
They looked _____ each other and kept their secrets _____ themselves.
| A．for; to | B．at; for | C．at; to | D．out; at |
Jack had a wonderful time _____ many interesting places in Beijing and he had much time __________ the city.
| A．to visit; to enjoy | B．to visit; enjoying |
| C．visiting; to enjoy | D．visiting; enjoying |
I have some problems __________ my homework. Could you tell me _____?
| A．with; what the height of the mountain is | B．in; what the height of the mountain is |
| C．with; what is the height of the mountain | D．in; what is the height of the mountain |
The girl _____ a smile on her face is always kind _____ others.
| A．wears; to | B．wearing; to | C．wore; with | D．wearing; for |